Scientists Have Identified 5 Different Types of Sleep

Researchers have identified five distinct types of sleep; the patterns of transition between these types provide insights into both chronic and acute health conditions.
Your sleep tracker could provide insights beyond your sleeping patterns—it may also offer clues about chronic conditions like diabetes and sleep apnea, as well as illnesses such as COVID-19. These insights come from a study that examined data from approximately 5 million nights of sleep from about 33,000 individuals. The researchers conducting this study have identified five primary sleep phenotypes, which they further categorized into 13 subtypes.